Javascript 将对象数组转换为属性数组
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Convert array of objects into array of properties
提问by Ellone
Is there a simple way, using filteror parseor something else to convert an array like the following :
有没有一种简单的方法，使用filter或parse或其他方法来转换如下数组：
var someJsonArray = [
{id: 0, name: "name", property: "value", otherproperties: "othervalues"},
{id: 1, name: "name1", property: "value1", otherproperties: "othervalues1"},
{id: 2, name: "name2", property: "value2", otherproperties: "othervalues2"}
];
into a simple array filled with one attribute of the objects contained in the previous array like this :
放入一个简单的数组，其中填充了前一个数组中包含的对象的一个属性，如下所示：
[0, 1, 2]
回答by Praveen Kumar Purushothaman
Use .map()function:
使用.map()功能：
finalArray = someJsonArray.map(function (obj) {
return obj.id;
});
Snippet
片段
var someJsonArray = [
{id: 0, name: "name", property: "value", therproperties: "othervalues"},
{id: 1, name: "name1", property: "value1", otherproperties: "othervalues1"},
{id: 2, name: "name2", property: "value2", otherproperties: "othervalues2"}
];
var finalArray = someJsonArray.map(function (obj) {
return obj.id;
});
console.log(finalArray);The above snippet is changed to make it work.
对上面的代码段进行了更改以使其工作。
回答by Keyboard ninja
You could do something like this:
你可以这样做：
var len = someJsonArray.length, output = [];
for(var i = 0; i < len; i++){
output.push(someJsonArray[i].id)
}
console.log(output);
回答by shresha
You can do this way:
你可以这样做：
var arr = [];
for(var i=0; i<someJsonArray.length; i++) {
arr.push(someJsonArray[i].id);
}
